JPS5952488A - Contiguous disc type magnetic bubble element - Google Patents

Abstract

PURPOSE:To obtain a bubble element having a high data rate in the even/odd system, by providing the 1st and the 2nd hair pin conductor pattern connected to the 1st and the 2nd caps on the 1st and the 2nd major transfer paths and taking an angle between bisectors of open angles of both the caps as >=90 deg.. CONSTITUTION:The angle 14 between the bisector 50 of the open angle of the caps 21 and the bisector 51 of the open angle of the 2nd caps 22 is taken as 90 deg. by folding a part of the 1st transfer path including the 1st caps 21 in the arrow 61. Thus, bubbles are generated selectively at the caps 21 and 22. That is, in impressing the 1st current pulse 16 and the 2nd current pulse 17 in the arrow 7 to the 1st conductor pattern 19 and the 2nd conductor pattern 20, bubbles are generated at the 1st caps 21 with the 1st current pulse 16 and at the 2nd caps 22 with the 2nd current pulse 17.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous disk type magnetic bubble element.

In conventional magnetic bubble devices (hereinafter referred to simply as conventional magnetic bubble devices) that transfer 1lff bubbles (hereinafter referred to as bubbles) using permalloy patterns, the permalloy patterns must be formed through very narrow gaps. First of all, the formation of this gap is the limit of "micrometer 1 processing" and hinders the white clay of Y:r, tl memory density. In order to overcome the drawbacks of the air bubble element in such Y(, Convencillina I+/type 7B), the US patent [
No. 382832! 1 specification ν4 is a contagion that transfers bubbles along a transfer path consisting of a non-implanted slope formed by A Yuas disk type magnetic bubble element has been proposed.

The introduction of conventional magnetic bubble elements was already established in November 1976.
anSRC1!0non MagnetIcs Magazine Volume MA, Volume G-12, No. 6, Page 614 - #c617 houses P, 1. In a paper published by Mr. Hnnnyhard et al., an element configuration called the even odd method using two minor loop groups, two bubble generators and two bubble detectors connected in series was proposed, and has been shown to be very effective in increasing data rates. However, in the continuous disk type magnetic bubble element,
・A specific configuration of the even Φ odd method has not been proposed.

An object of the present invention is to provide a continuous disk type magnetic bubble element that employs an even-odds method and has a very high data rate.

The continuous disk type magnetic bubble element of the present invention has a first major transfer path and a second major transfer path formed by selectively implanting ions onto a magnetic M film capable of holding magnetic bubbles. , an even-odds type contiguous disk type magnetic bubble element comprising a first minor transfer path group and a second minor transfer path group, the first cusp portion on the first major transfer and the the second major transfer path has first and second hairpin-shaped conductor patterns electrically connected in series to the second force cusp portion of the second major transfer path, and the opening angle of the t1th cusp portion; The angle between the bisector of the opening angle of the second cusp and the opening angle of the second cusp is 90° or more.

By using the present invention, the electrical connection between the first cusp of the first major transfer path and the second cusp of the second major transfer path is connected in series. Instep, 1st and 2nd hem '1 bottle shape: l :, / guktapakun (i
By applying the first and second current pulses with different tl values, the first major transfer Pa and the second major +ii;
To make it ``[two and/:).Therefore, the air of sweat],
The bubble generated at the first cusp of the major transfer path of Rabbit 1 by the flow pulse is used as information on the even side, and the second
By using the bubble generated in the second cusp portion of the second major transfer path by the current pulse as information on the odd side, it is possible to realize an even odd type continuous disk type magnetic bubble element.

Next, the basic principle of the present invention will be explained with reference to FIGS. 1(a) and 1(b). In FIG. 1(a), the reference number 8 is a magnetic thin film, the same number 3 is a hairpin-shaped conductor pattern, the same number 1 is magnetic, and a magnetic bubble transfer path formed by selectively implanting ions into a # film; The number 9 indicates the direction of the bias magnetic field, the number 60 indicates the (110) direction of the magnetic thin film, and the number 18 indicates the direction of the magnetic thin film.
3 is an arrow representing the angle defining the phase of the flow pulse. When a current pulse in the direction of the arrow 7 is applied to the hairpin-shaped conductor pattern 3 (hereinafter referred to as a conductor pattern), a magnetic bubble 10 is generated at the cusp portion 2 of the magnetic bubble transfer path 1 (hereinafter simply referred to as a transfer path). Occur. Figure 1 (1))
'#1i1. is applied to the conductor pattern 3 of the 11th ft (F+) magnetic bubble generator. It is a graph in which the application phase (1) LY) of the current pulse is plotted on the horizontal axis 13 and the operating amplitude of the current pulse is plotted on the vertical axis 12. The pulse width of the current pulse is 0.3 μs. As is clear from Fig. 1(a), in order to generate bubbles using the magnetic bubble generator of Fig. 1(a), the rotating magnetic field is It is necessary to apply a current pulse -1 when the direction within the range is oriented (.
・Bubbles do not occur even if a current/pulse is applied during this period.

As shown in 1st!1(a), the Fil of the cusp part 2
The end of the angle 42 in the direction of the 2nd molecule +6
IL angle between and arrow 5; 1. Approximately 4501 arrow 11
and arrow 4 and ()1, [the angle is about 20°. Therefore, t142 and 1 (as shown in 81, the first cusp 1''i!,' 21 +/- doo: -1 angle bisector 50
and the 29th segment line 51 of the angle 11 of the second cusp portion 22. C angle 14<1'90° or more and 7°
A transfer path is formed by connecting the 11th conductor pattern 19 and the 2nd conductor pattern 20 electrically in series to each part of the k-cushion section, and the 21st conductor pattern to the k2 contactor pattern. If the first current pulse 16 and the second current pulse 17 with different application phases are applied as shown in 1.c (as shown in BL), the current pulse 6 in the first box
[A bubble is generated only in the tenth cusp portion 21, and a bubble is generated in the → of the second cusp portion 22 in response to the second current pulse. As described above, by using the basic principle of the present invention, bubbles can be selectively generated in two different cusps using conductor patterns connected in series to the air and air bubbles. In Figure 2(b), the horizontal axis 40 represents the phase of the current pulse, and the vertical axis 41 represents the amplitude of the current pulse.

Next, the operation of the first embodiment of the present invention will be explained with reference to FIG. In Figure 3, the reference number 3° is the first major transfer path, the same number 31 is the second major transfer path, the same number 32 is the first one-inner transfer path group, and the same number 33 is the second minor transfer path. Road group, same number 34. and 35 are the first and second magnetic bubble transfer gates, respectively, the same number 36
, and 37 are first and second magnetic bubble detectors, respectively;
The number 60 is an arrow representing the (110) direction of the magnetic thin film.

In this embodiment, by bending a part of the first transfer path including the first cusp portion 21 in the direction (i'T2) shown by the arrow 61, the opening angle of the first cusp portion 21 is doubled.
Equisector line 50 and the two-part line 5 of the opening angle of the second cusp portion 22
The angle 14 formed with 1 is q oo (・ru. Reference number 3
The shapes of the transfer paths 31 and 31 are slightly different from those shown in FIG. Figure (1
)), it is possible to selectively generate bubbles in the tenth cusp portion 21 and the second cusp portion 22 based on the basic principle explained with reference to FIG. can. 11 Specifically, a first conductor pattern 19 and a second conductor pattern 20 are arranged in the direction shown by the arrow 7.

By applying the current pulse 16 and the second current pulse 17, bubbles can be generated in the first cusp portion 21 by the first current pulse 16 and in the 20th cusp portion 22 by the second current pulse 17. can.

FIG. 4 shows that by bending a portion of the first major transfer path including the cusp portion 21 of FIG. 1 in the (011) direction indicated by the arrow 62, 1. The opening angle of the second curved portion 22, such as the segment line 5o, with the two-part line 51. [This is a second embodiment of the present invention in which the angle 14 is set back by 120°.

This is an arrow representing the (110) direction of the 4th gate.

The fifth part 1 is the first major turning point (a part of the road is bent in the direction shown by the arrow 63 (iol)), which includes the first cusp part 21. This is a third embodiment of the present invention, in which the angle 14 formed between the second cusp portion 22 and the bisector 51 of the opening angle, such as 1q+50, is 120°.

KA 6 shows an embodiment of vj4 of the present invention in which the bent part of the first major transfer path including the first cusp part 21 is made longer by 1 bit than the third embodiment of the 501st embodiment.
be. This makes it possible to reduce the influence of the magnetic field induced by the current pulse j applied to the conductor pattern 15 on the bubbles transferred on the first major transfer path.

FIG. 7 shows the first gasp portion 21 on the (112) side of the first major transfer path formed in the (110) direction and the ( 11, 2) 4I (!: In the second cusp portion 22 of the first conductor pattern l 9 and h ft12 conductor pattern 20 are provided, respectively, l, s tl) 1
Bisect the opening angle of the cusp portion 21 + %I” O and ri”
/(
In the fifth embodiment of the present invention where one angle 14 is 180°, k
).

FIG. 8 shows the first major transfer path 30. A second major transfer path 31, a third major transfer path 24, and a first minor transfer path group 32 formed in the (112) direction, a second minor transfer path fit: +3, a third minor Transfer route group 25 is boiled, and a part of the first major transfer route is indicated by arrow 6.
2 in the (011) direction, and (1,01) as indicated by the 1 metropolitan arrow 63 of the first major transfer F11I.
By bending the hairpin part of the conductor pattern in the direction of
Bisector of opening angle 50° 2 of opening angle of second cusp portion 22
Equivalent A line 51 and ■ of the third cusp portion 23: 2 of the angle
This is a sixth embodiment of the present invention in which the directions of ¥i:minute 14H52 are spaced at 120° intervals. 1st conductor slam 1
9. If the first current pulse 16 in the direction of the arrow 7, the third current pulse 29, and the third lightning current pulse 29 are applied to the second conductor pattern 20 and the third conductor pattern 28, 1 current pulse 16 causes the tenth cusp portion 21 to
Then, the second current pulse 17 causes the second cusp portion 22 to
Furthermore, bubbles can be selectively generated in each of the third cusp portions 23 by the third current pulse 29. In FIG. 8, reference numeral 26 is the third magnetic bubble transfer gate.

FIG. 9 shows a seventh embodiment of the present invention in which the batten widths of the first conductor pattern 19 and the second conductor pattern 20 are changed. The direction indicated by the arrow 60 is (1) of the magnetic thin film.
12) When changing the direction, the first cusp portion 21 is located on the pad side of the transfer path, and the second cusp portion 22 is located on the super side of the transfer path, and the induced The lower bias magnetic field component is thicker in the second cusp portion 22 than in the tenth cusp portion 21 (. Therefore, as shown in this embodiment, the batten width of the first conductor pattern 19 is By making it narrower than the conductor pattern 20, the total bias peak field components generated by the power pulse and the charged wall can be made approximately equal to 17.

As mentioned above, 11. According to the present invention, bubbles can be selectively generated by hairpin-shaped conductor buttons electrically connected in series provided at different cusps on the Ir'2'-B number transfer path, and an even-odd method is used. This makes it possible to provide a continuous disk type magnetic bubble separator with an extremely high data rate.

The shapes of the major transfer path, the group of minor transfer paths, and the hairpin-like conductor button are other than those shown in FIGS. 3, 4, 5, 6, 7, 8, and 9. (・There are many things that can be considered, but anything that can transfer bubbles according to the principle explained using Figures 1 and 2 is included in the undiscovered invention. do not have.

[Brief explanation of the drawing]

Figure 1 (at, Figure 1 (t)), Figure 2, 'l (a)
Jλ and Figure 2 (1)) are diagrams for explaining the basic principle of the invention, Figure 30 is a diagram showing the first embodiment of the invention, and Figure 4 is a diagram showing the second embodiment of the invention. Figure 5 shows the third embodiment of the invention, Figure 6 shows the fourth embodiment of the invention, and Figure 7 shows the fifth embodiment of the invention. ,
FIG. 8 is a diagram showing the #6 embodiment of the present invention, and FIG. 9 is a diagram not showing the seventh embodiment 1 of the present invention. In the figure, 1 is the magnetic bubble transfer path, the cusp part of the 2-digit transfer path, 3&'', the hairpin-shaped conductor button 4.5 is the arrow indicating the direction of the rotating magnetic field, and 6 ■ the application phase of one pulse of electric cooling. 7-: *Arrow indicating direction of flow pulse, 8 is pc, sex control 9 ['l bias magnet,
Arrow representing the direction of the field, 10) 'J, e'l bubble,
11 is a cusp r; an arrow representing the 2nd half of the 1st angle - L direction; 12 is the current pulse operation curve! I don't show my IQ, but my life is 1, 13t! : Application phase of current pulse (+), r,
Y) na station 0) zu 4 yellow 1ftl+, 1/N ma first force,
Rokubui'? li +n)2'・1-zuy6°1 and f,1
), ' 20 force sp part divided into two halves and 1 angle, 16
゜17 is the 1st and #l\2 lightning 5 pulse, 18 is γ
11 arrows representing angles defining the phase of the flow pulse; 19;
20 are first and second hairpin-shaped conductor buttons, 21, 22 are first and second cusp parts, 23 are third cusp parts, 24 is a third major transfer path, 25
The third minor transfer P2! y+y, 26 is the third magnetic bubble transfer game, 1-127 is the third magnetic bubble detector, 28 & tI3 hairpin-shaped conductor button, 29 is the third current pulse, 30.31 are each the first
and the second major transfer path, 32.33 are the first and second minor transfer path groups, 34.35 are the first and second magnetic transfer paths, respectively, and 36.37 are the first and second minor transfer paths, respectively. 2 magnetic bubble detector, 4 old''↑1'r5
The horizontal axis represents the phase of the current pulse, 41 arrows represent the amplitude of the current pulse, 42 represents the opening angle of the cusp,
50, 51, and 52 are respectively the 1st. Arrow indicating the direction of the bisector of the opening angle of the second and third cusp parts, 60°61,6
2.63 is the (110) direction of the magnetic thin film, [72]
These are arrows representing the direction, [0〒1] direction, and [10th direction] direction. Agent: Susumu Uchihara, patent attorney, 1. Seagull,,j,/
. Spear 1 Month (0) 1st mouth (b> /2 DLY (skin) Spear 2f; d ((U 70- 2nd mouth (b) (9) (31,,0) DLY (Hawk Huo 5 Mouth O 〃 Diagram DLY (Hananoo 5 Mouths)

Claims (1)

[Claims] a first major transfer path formed by selectively implanting ions onto a magnetic thin film capable of retaining magnetic bubbles;
An even-odd contiguous disk type magnetic bubble element equipped with a second major transfer path, a first minor transfer path group, and a second minor transfer path group (
first and second hairpin-shaped conductors connected in series to a first cusp portion on the first major transfer path and a 20th cusp portion on the second major transfer path; and the angle formed by the bisector of the opening angle of the tenth cusp part and the bisector of the opening angle of the second cusp part is 90L' or more. Youras disk type magnetic bubble element.